By Zoila Palma Gonzalez: Forecasters at the National Hurricane Center (NHC) have issued Hurricane warnings for Puerto Rico. A Hurricane Watch has been issued for the U.S. Virgin Islands and the Dominican Republic. On the forecast track, the center of Fiona is expected to move near or south of the Virgin Islands this evening, approach Puerto Rico tonight and move near or over Puerto Rico Sunday night. Fiona should then move to the Dominican Republic on Monday. Strengthening is forecast during the next few days, and Fiona is expected to become a hurricane by Sunday or Sunday night while moving near Puerto Rico.